/Engine/Source/Runtime/Engine/Classes/Engine/DemoNetDriver.h
bool ReadDemoFrameIntoPlaybackPackets ( [FArchive](API\Runtime\Core\Serialization\FArchive) & Ar, [TArray](API\Runtime\Core\Containers\TArray)< [FPlaybackPacket](API\Runtime\Engine\FPlaybackPacket) > & Packets, const bool bForLevelFastForward, float * OutTime )